Flesh Feast

When you and a group of friends get trapped on a Caribbean island with no means if escape, it seems things can't get much worse. That is, of course, until swarms of the undead find out you're there. A co-operative effort, the game lets you team up with other online players giving you three new teammates to begin each round of play. The object is simple enough (beat the zombies to death), but the high AI and grueling circumstances are going to push your survival skills to the limit. Oh, one more thing don't even think about going in the water.